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Mandarinka [93]
4 years ago
10

Which statement applies to electronegativity?

Chemistry
1 answer:
joja [24]4 years ago
4 0

Answer: Option (A) is the correct answer.

Explanation:

Electronegativity is the ability of an atom to attract electrons towards itself.

When we move across a period in the periodic table then there occurs an increase in the electronegativity of the elements because of decrease in their atomic size.

This is because electrons add to the same sub-shell and due to electrostatic force of attraction from the nucleus they get pulled closer towards the nucleus leading to shrinkage in size.

And, smaller is the size of an atom more readily it will attract an electron.

Therefore, we can conclude that electronegativity increases across a period.

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I am having trouble solving it pls help
MAXImum [283]

Answer:

1. 0.097 s

2. 0.420 M

Explanation:

To solve both questions we'll use the formula:

[A]ₓ = [A]₀ - kt

Where [A]ₓ is the concentration of A at a given time; and [A]₀ is the initial concentration.

1) We input the data given by the problem:

0.167 M = 0.700 M - 5.48 M/s * t

And solve for t:

t = 0.097 s

2) We input the new data:

[A]ₓ = 0.500 M - 0.361 M/s * 0.220 s

and solve for [A]ₓ:

[A]ₓ = 0.420 M

5 0
3 years ago
What is the molarity of a solution of 3.0 mol of KCl in 4.0L of water?
Sergio039 [100]

Answer:

awnser choice F

Explanation:

bc ik

8 0
2 years ago
Family includes the least active of nonmetals
Anettt [7]
The Nobel gasses
 Excluding those, the most active are the lower left and upper right.So the least
active (EXCLUDING GROUP 18) are the non- metals furthest form the upper right 
7 0
3 years ago
how many grams of fertilizer , for potassium sulfate are there in 42.3 mole of potassium sulfate? step by step
Over [174]

Answer:

The mass of 42.3 moles of potassium sulfate is 7,371.1557 grams

Explanation:

Potassium sulfate K₂SO₄ which is also known as sulphate of potash is a water soluble common component of fertilizer

The molar mass of potassium sulfate, M = 174.259 g/mol

The given number of moles of potassium sulfate, n = 42.3 moles

The mass, 'm', of a given number of moles of potassium sulfate, 'n', is given as follows;

m = n × M

Therefore, we have;

The mass, 'm', of 42.3 moles of potassium sulfate is found by plugging in the values for 'M', and 'n', in the above equation as follows;

m = 42.3 moles × 174.259 g/mol = 7,371.1557 grams

The mass of 42.3 moles of potassium sulfate, m = 7,371.1557 grams.

4 0
3 years ago
In the Haber reaction, patented by German chemist Fritz Haber in 1908, dinitrogen gas combines with dihydrogen gas to produce ga
Lady bird [3.3K]

Answer:

0.41kg/sec

Explanation:

PV= nRT

Given : V= 505 L

P=0.88 atm

R= 0.08206 Latm/K*mol

T= 172 .0C = 172+273 = 445 K

n = PV /RT = 0.88 * 505 / 0.08206 * 445 = 12.17 moles per sec of N2 are consumed

As per reaction : N2 + 3H2 ----> 2NH3

1 mole N2 is consumed to produce 2 moles NH3

moles of NH3 produced per sec :

(2 moles NH3/1mol N2) * 12.17 moles N2 = 24.34 moles NH3 per sec

grams of NH3 produced per sec =

24.34 moles NH3 per sec * molar mass NH3 = 24.34 moles NH3 per sec * 17.031 g/mol = 414.5 g NH3 per sec

rate in Kg/sec = 414.5 g NH3 per sec * (1kg /1000g) = 0.4145 Kg/sec

= 0.41kg/sec

5 0
3 years ago
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